Pipeline music

Pipeline music/Pipeline instruments/Pipeline echoes - Science Museum exhibitions exhibition items scheme

Science Behind It

The air is filled with sounds of various frequencies, and each electronic tube can respond to specific frequencies of sound in the background. When the sound waves introduced into the tube are superimposed on the waves reflected back from the tube, resonance occurs, resulting in a louder sound. The size of the sound depends on the length of the electronic tube, and longer tubes will produce a low-key, low profile sound. Frequency is the physical characteristic of sound, while tone is the subjective reflection of frequency. Usually, the level of color tone is consistent with the level of frequency, and if the frequency remains constant, changes in intensity will slightly affect the color tone. As the intensity increases, low-frequency tones appear lower, while high-frequency tones appear higher. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. The higher the frequency, the sharper the sound we hear, but our ears can hear sounds up to 20000HZ, and sounds above this frequency are called ultrasound; The lower the frequency, the deeper the sound, but the lowest sound can only be heard at 20Hz, and sounds below this frequency are called infrasound waves. The beautiful music we hear is produced by constantly changing frequencies. The frequency of intermediate frequency 6 is 440Hz. If the frequency is uniform and regular, with periodic changes, our ears will easily feel it. For example, when a train passes in front of us, it will whistle, and we will hear the sound from low to high, from high to low. This is not a change in whistle frequency, but caused by a change in sound source. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. This is the famous Doppler effect, which is used by sirens and sirens. By the way, the size of sound is not related to frequency, it is related to amplitude, which means that the more energy a sound wave contains, the louder the sound.

Exhibition items description

This exhibition consists of a row of tubes with similar shapes but different lengths. The tube ends are cut into an elliptical shape at a certain angle and face the audience. The audience can use a percussion board to tap different pipes and hear different sounds. The longer the tube, the lower the frequency, and the shorter the tube, the higher the frequency, similar to 1, 2, 3, 4, 5, 6, 7 in vocal music. Skilled audiences can even play their own fun, pop songs, etc.

form of expression

Mechanical interaction

How to Operate

Participants use a tapping board to hit a circular tube, listen to the music emitted from the tube, and try to create their own favorite music.